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Today is Monday, Aug. 20, the 233rd day of 2012. There are 133 days left in the year.

On this date in the SCV: In 1942, “dim-out” lighting regulations went into effect to protect the movement of vessels along the coast from enemy submarines, and to obscure target areas caused by bright sky reflections from cities as far inland as Sacramento and Fresno. Illumination from those cities was visible as far as 150 miles at sea.

Today’s Highlight in History: On Aug. 20, 1862, the New York Tribune published an open letter by editor Horace Greeley to President Abraham Lincoln titled “The Prayer of Twenty Millions”; in it, Greeley called on Lincoln to take more aggressive measures to free the slaves and end the South’s rebellion.

Ten years ago: Without firing a shot, masked German police commandos freed two senior diplomats from armed men who had stormed the Iraqi embassy in Berlin, bringing a bloodless end to a 5-hour hostage drama by a previously unknown group opposed to Saddam Hussein.

Five years ago: Tens of thousands of tourists fled the beaches of the Mayan Riviera as Hurricane Dean roared toward Mexico’s Yucatan Peninsula. A roadside bomb killed the governor of the predominantly Shiite Muthanna province in Iraq. A smoking China Airlines Boeing 737-800 exploded in a fireball at an airport gate in Okinawa seconds after all 157 passengers and eight crew had safely evacuated. Democratic presidential candidate Barack Obama expressed irritation with the “Obama Girl” Web video, telling The Associated Press it had upset his young daughters. Hotel magnate Leona Helmsley died in Greenwich, Conn., at age 87.

One year ago: Israel issued a rare apology for the deaths of three Egyptian soldiers who were killed during a cross-border attack blamed on Palestinians. North Korean leader Kim Jong Il arrived in Russia’s Far East on a nearly weeklong visit. Jordyn Wieber won her first title at the U.S. gymnastics championships in St. Paul, Minn., in a rout, finishing with 121.30 points, 6.15 points ahead of McKayla Maroney.